Martinique is an island in the eastern Caribbean Sea. The music of Martinique has a heritage which is intertwined with that of its sister island, Guadeloupe. Despite their small size, the islands have created a large popular music industry, which gained in international renown after the success of zouk music in the later 20th century. Zouk's popularity was particularly intense in France, where the genre became an important symbol of identity for Martinique and Guadeloupe. Zouk's origins are in the folk music of Martinique and Guadeloupe, especially Martinican chouval bwa and Guadeloupan gwo ka. There's also notable influence of the pan-Caribbean calypso tradition and Haitian kompa.